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* zynq: spi: Remove unnecessary error conditionSiva Durga Prasad Paladugu2015-04-22-3/+0
| | | | | | | | | | Removed the unnecessary error check from spi_xfer as the bitlen zero is possible now to deassert the chip select for which no data is required to be transfered. Signed-off-by: Siva Durga Prasad Paladugu <sivadur@xilinx.com> Signed-off-by: Michal Simek <michal.simek@xilinx.com> Reviewed-by: Jagannadha Sutradharudu Teki <jagannadh.teki@gmail.com>
* spi: Add zynq spi controller driverJagannadha Sutradharudu Teki2013-08-07-0/+280
Zynq spi controller driver supports 2 buses and 3 chipselects on each bus. Signed-off-by: Jagannadha Sutradharudu Teki <jaganna@xilinx.com> Acked-by: Siva Durga Prasad Paladugu <sivadur@xilinx.com> Signed-off-by: Michal Simek <michal.simek@xilinx.com>